/*
 * Copyright 2021 ABSA Group Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package za.co.absa.commons.config

import org.apache.commons.configuration.EnvironmentConfiguration
import org.apache.commons.lang.StringUtils
import za.co.absa.commons.config.UpperSnakeCaseEnvironmentConfiguration.toUpperSnake

class UpperSnakeCaseEnvironmentConfiguration extends EnvironmentConfiguration {

  override def getProperty(key: String): AnyRef = super.getProperty(toUpperSnake(key))

  override def containsKey(key: String): Boolean = super.containsKey(toUpperSnake(key))
}

object UpperSnakeCaseEnvironmentConfiguration {
  private def toUpperSnake(key: String) = {
    key
      .split("[\\W_]")
      .flatMap(StringUtils.splitByCharacterTypeCamelCase)
      .map(_.toUpperCase)
      .mkString("_")
  }
}
